The third set of 40 years, Exodus 7:8-13 – Deuteronomy 34:12

The third set of 40 years now begins.
Moses was 80 years old and Aaron was 83 when they spoke to Pharaoh.
Which was the start of the ministry God had called Moses to do for Him? This was at the end of 80 years of training of Moses by God.
From about Exodus 7:1 through the books of Leviticus, Numbers and till the end of Deuteronomy cover the life and ministry of Moses the friend of God.Time line – covering the life of Moses.

Background Reading:

The start of the third set of 40 years

7:8 Then the LORD told Moses and Aaron, 9 “When Pharaoh says to you, ‘Perform a miraculous sign,’ then you are to say to Aaron, ‘Take your staff and throw it in front of Pharaoh.’ It will become a serpent.”

10 So Moses and Aaron went in to Pharaoh and did what the LORD had commanded them. Aaron threw his staff in front of Pharaoh and his officials, and it became a serpent. 11 Then Pharaoh also called for the wise men and sorcerers, and they—along with the Egyptian magicians—did the same thing with their secret arts. 12 So each one threw down his staff and it became a serpent, but Aaron’s staff swallowed up their staffs. 13 Yet Pharaoh’s heart was stubborn and he did not listen to them, just as the LORD had said would happen.Exodus 7:8-13